Patents by Inventor Zhenya Ma

Zhenya Ma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cylindrical model eye, cylindrical test device and the manufacturing method thereof
    Patent number: 7742244
    Abstract: A cylindrical model eye comprises a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface, a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface. The second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has substantially the same radius curvature radius as the second cylindrical surface.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: June 22, 2010
    Assignee: National Institute of Metrology
    Inventors: Wenli Liu, Jianping Zhu, Baoyu Hong, Fei Li, Zhenya Ma, Lei Yang
  • Cylindrical Model Eye, Cylindrical Test Device And The Manufacturing Method Thereof
    Publication number: 20090109434
    Abstract: A cylindrical model eye comprises a plano-cylindrical portion having a plano surface and a first cylindrical surface opposite to the plano surface, a sphero-cylindrical portion having a convex spherical surface and a second cylindrical surface opposite to the convex spherical surface. The second cylindrical surface mates with the first cylindrical surface, and the first cylindrical surface has substantially the same radius curvature radius as the second cylindrical surface.
    Type: Application
    Filed: October 31, 2008
    Publication date: April 30, 2009
    Inventors: Wenli Liu, Jianping Zhu, Baoyu Hong, Fei Li, Zhenya Ma, Lei Yang